package com.learn.handler;

import com.learn.pojo.RpcRequest;
import com.learn.service.UserServiceImpl;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;

/**
 * 自定义的业务处理器
 */
public class UserServiceHandler extends ChannelInboundHandlerAdapter {

    //当客户端读取数据时,该方法会被调用
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {

        //注意:  客户端将来发送请求的时候会传递一个参数:  UserService#sayHello#are you ok
        RpcRequest rpcRequest = (RpcRequest) msg;
        //2.如果符合规则,调用实现类货到一个result
        UserServiceImpl service = new UserServiceImpl();
        String result = service.sayHello(rpcRequest);
        //3.把调用实现类的方法获得的结果写到客户端
        ctx.writeAndFlush(result);


    }
}
